Trouble Compiling transcode-1.0.3

[ldb88]

I'm trying to compile transcode-1.0.3, but I'm having trouble telling it where libavcodec is. This is the command I am using:

./configure --prefix=$HOME CPPFLAGS="-I$HOME/include -I$HOME/include/ffmpeg -I$HOME/include/mpeg2dec" LDFLAGS="-L$HOME/lib" --with-libavcodec-includes=$HOME/include --with-libavcodec-libs=$HOME/lib

The files $HOME/include/ffmpeg/avcodec.h and $HOME/lib/libavcodec.so exist, with the latter being a link to libavcodec.so.51.40.4.

It gives me the following error:

ERROR: requirement failed: cannot link against libavcodec
libavcodec can be found in the following packages:
  FFMpeg  http://www.ffmpeg.org/

Any suggestions? Thanks.

[bigtomrodney]

What distro are you using? There's a good chance that transcode is already available in your repositories.

If you are intent on compiling from source I would think you need to install libavcodec first.

[fingal]

Hi - interesting error. Which distro are you using? I only ask because I just did a Google search on:

"ERROR: requirement failed: cannot link against libavcodec"

and got several hits, but no solutions. Normally a problem like that is a common one, and I would have expected to find an answer quite easily.

Sorry bigtom... I saw you get in there a little before my response. I see that libavcodec is just a component of the FFMpeg package.

[ldb88]

It's on CentOS, but I don't have root access, so I can't install to /usr or use yum. I have to compile everything and put it in $HOME.

Installing FFMpeg installed libavcodec as well. They come together.

EDIT: Yeah, thanks for answering so quickly. I hope we can figure this out.

[fingal]

It might sound overly simple, but take a step back and type ./configure --help . Look at the compile options, and enter them into a text editor. Read each step and check for any typos.

Sometimes doing this can reveal that 'one tiny error' which is stopping things from working out.

That's just a generic tip, but it might help. You can always cut and paste commands between the CLI and a text editor. Sometimes all that's wrong is a single character.

Failing that, get a search together using key words from your efforts to get transcode working. For example:

transcode compile OR compiling problem OR problems OR error OR errors libavcodec

A search like that can pull in some useful tips, but you might want to vary your strategy a bit. PS, this thread might be useful.

[MrLou]

Hi there,

I managed to fix this problem, eventually.

First I downloaded the latest version of transcode (1.10)

At first it wouldn't compile and I got error:

decode_mpeg2.c:142: undefined reference to `mpeg2convert_rgb24'

I found that by editing import/Makefile to add:

LIBMPEG2_LIBS = -L/usr/lib -lmpeg2 -lmpeg2convert

It worked OK.

Hope this helps someone else.

Thanks,

Lou